The
General
Triangle
Is
Unique

Title:

The General Triangle Is Unique

Author:

Joachim Breitner (mail /at/ joachim-breitner /dot/ de)

Submission date:

2011-04-01

Abstract:

Some acute-angled triangles are special, e.g. right-angled or isoscele triangles. Some are not of this kind, but, without measuring angles, look as if they were. In that sense, there is exactly one general triangle. This well-known fact is proven here formally.